Solution coordination chemistry of actinides: ...
Document type :
Article dans une revue scientifique
Title :
Solution coordination chemistry of actinides: Thermodynamics, structure and reaction mechanisms
Author(s) :
Szabó, Zoltan [Auteur]
Vallet, Valérie [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Toraishi, Takashi [Auteur]
Grenthe, Ingmar [Auteur]
Vallet, Valérie [Auteur]

Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Toraishi, Takashi [Auteur]
Grenthe, Ingmar [Auteur]
Journal title :
Coordination Chemistry Reviews
Pages :
784-815
Publisher :
Elsevier
Publication date :
2006-01-04
ISSN :
0010-8545
English keyword(s) :
actinide chemistry
coordination chemistry
reactivity
quantum chemistry
EXAFS
NMR
coordination chemistry
reactivity
quantum chemistry
EXAFS
NMR
HAL domain(s) :
Physique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]
Chimie/Chimie théorique et/ou physique
Chimie/Chimie théorique et/ou physique
English abstract : [en]
The emphasis of this review is on the combination of experimental and theoretical methods to obtain microscopic information on the chemistry of actinides in aqueous solution. A brief discussion is given of some important ...
Show more >The emphasis of this review is on the combination of experimental and theoretical methods to obtain microscopic information on the chemistry of actinides in aqueous solution. A brief discussion is given of some important experimental methods that provide information on the equilibrium constants and constitution of actinide complexes in solution, their structure and the rate and mechanism of ligand substitution reactions. The microscopic perspective is provided by a comparison of experimental data with those obtained using quantum chemical methods; the emphasis is here on structure and reaction mechanisms. Most of the experimental data refer to the chemistry of uranium, thorium and curium, but this information can be generalized to other actinides as their chemistry is often very similar in a given oxidation state. The first step in the analysis of complex formation in solution is based on equilibrium analytical methods; the discussion is here focused on those requiring macro amounts of actinides, as these are necessary in the methods used to obtain structure (large angle X-ray scattering, extended X-ray absorption spectroscopy and NMR) and dynamic (NMR, relaxation and stopped-flow methods) information. Finally, some comments are made on how the molecular understanding of complex formation between UO22+ and small ligands may be of importance in naturally occurring ligands like humic and fulvic acids and biomolecules, such as amino acids, proteins and nucleotides.Show less >
Show more >The emphasis of this review is on the combination of experimental and theoretical methods to obtain microscopic information on the chemistry of actinides in aqueous solution. A brief discussion is given of some important experimental methods that provide information on the equilibrium constants and constitution of actinide complexes in solution, their structure and the rate and mechanism of ligand substitution reactions. The microscopic perspective is provided by a comparison of experimental data with those obtained using quantum chemical methods; the emphasis is here on structure and reaction mechanisms. Most of the experimental data refer to the chemistry of uranium, thorium and curium, but this information can be generalized to other actinides as their chemistry is often very similar in a given oxidation state. The first step in the analysis of complex formation in solution is based on equilibrium analytical methods; the discussion is here focused on those requiring macro amounts of actinides, as these are necessary in the methods used to obtain structure (large angle X-ray scattering, extended X-ray absorption spectroscopy and NMR) and dynamic (NMR, relaxation and stopped-flow methods) information. Finally, some comments are made on how the molecular understanding of complex formation between UO22+ and small ligands may be of importance in naturally occurring ligands like humic and fulvic acids and biomolecules, such as amino acids, proteins and nucleotides.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Non spécifiée
Popular science :
Non
Comment :
31 pages
Source :
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